VizieR Online Data Catalog: Close star encounters (Bailer-Jones, 2015)

The table gives the perihelion (closest approach) parameters of stars in the Hipparcos-2 catalogue (I/311) which are found by numerical integration through a Galactic potential to approach within 10pc of the Sun. These parameters are the time (relative to the Hipparcos measurement epoch), heliocentric distance, and heliocentric speed of the star at perihelion. Uncertainties in these have been calculated by a Monte Carlo sampling of the data to give the Bayesian posterior probability density function (PDF) over the parameters. For each parameter, three summary values of this PDF are reported: the mean, the 5% lower bound, the 95% upper bound. The latter two give a Bayesian 90% confidence interval. The table also reports the probability that each star approaches the Sun within 0.5, 1.0, and 2.0pc, as well as the measured parallax, proper motion, and radial velocity (plus uncertainties) of the stars. Table 3 in the article lists the first 65 lines of this data table (mean perihelion distance below 2pc).

(1 data file).